Dairy free strawberry tart - any ideas?

This is a bit of a long shot, but we have a toddler book with pictures of different foods and DS1 has been on at me for ages about a strawberry tart (basically it's normally pastry with creme patissiere (thick French custard stuff) and then whole or halved strawberries on top).

I can't seem to find any dairy free recipes on the internet and just wondered whether anyone has any bright ideas as to something I could use instead of the custard!!

I can't stand the taste of soy milk and am wary about making the custard with rice milk as I'm not that great at custards anyway and I think it wouldn't set properly...

Trixymalixy, the oat cream sounds like a good idea instead of rice milk - I'll give it a try. We live in Luxembourg and I haven't seen soy whipping cream, but as I say I prefer to avoid soy for the taste anyway.

I bought a 2 pack of strawberry tarts in tesco yesterday which I noticed were dairy free (was checking for egg free). Tesco's own brand sold at the chilled desert section. Don't have the pack left to check what it was made with (probably a lot unhealthy crap!)